Improved grinding-mill



F. KAISER.v

GRINDING MILL.

Noyszaz. Patented sept. 29, 1868.

l" fk v i Invert i271" shaftf, 'which carries the ratchet-wheelfs.

@uiten fates @anni ffirs.

Letters Patent No. 82,532, dated September 29, 1868.

IMPROVED GRINQING-MILL ilge rlntule rsfimh In in these Enters jntsut mit making atti ai tige time.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, FRANK KAISER, of the city of Bualo, in the county of Erie, and State of New York, have invented a certain new and improved Grinding-Mill; and Ido hereby declare that the following is a. full, idear,- and exact description thereof, reference being had to the accompanying drawings, making a part of this specication, in whichl Figure I is a vertical Sectiemenu Figure II an end elevation. v

My invention consists in certain improvements in grinding-mills, as will be hereinafter more fully described.

Letters of like name and kind refer to like parts in cach of the figures.

A representsvthe main frame of the machine, upon which all the operating parts are supported,

B represents a drum or cylinder,- which has serrations formed upon the circular face. and is supported upon the main shaft b. A covering or case is erected around this drum, as shown at at; which almost entirely surrounds it, leaving only a small space open upon one side-for the introduction of the grain.

C represents an adjustable curved plate, having corrhgations upon the inner face thereof, between which and those of the drum the grain is ground. This curved plate is supported upon and adjusted by two screwbolts, c1 and 0", one of them, al, being placed vertically below, the centre of the drum, and supporting the lower portion of the plate, and the other, c2, at un 'angle ofabout forty-five degrees to the rst, and supporting the upper portion of the plate. Each of these set-screws is provided with a notched hand-wheel, and with a springpawl, d, attached to the frame A, the pawls fitting into the notches, so that the screws may be irmly held in one particular position, until a change in that of the plate may render it necessary to turn the screws.

E represents a hopper, which is supported upon a portion'of the frame A, directly' over the drum B. It

has an oscillating bottom, F, which is suspended uponl the ends of rods, chains', or other connecting-devices, e',

and'has a rim upon three sides thereof, leavingvthe fourth, which is directly above the hoppered opening in the case al, openfor the egress of'the grain from the hopper E. This open end'of the hopper-bottom may be raised or lowered, in a manner to feed the grain faster or slower, by means of the bands or chains j" wound upon thc A. spring-bar or dog, y, the end'of which rests between the teeth of the ratchet-wheel, is employed for holding the open end of the hopper-bottom at any elevation desired. -lp

AThe oscillating motion of the'hopper-bottom is produced by means of the bell-crank h, connectingrod L, pitman and spur-wheel I upon the shaft Il The upper end of the pitman 'h2 has a vertical slot, s, which not only givesfan oscillating-motion to the bottom, F, of the hopper, but also a striking-motion both when the pitman is raised and lowered, whereby said bottomis forcibly shaken, so as to feed the grain freely to` the grinding-drum. l

J represents a sieve, located below the drurn B, and supported upon a roller at. one end, and a rocking-post, jpat the other, in suchmanner that one end is at a greater elevation than the other, so that, when the sieve is shaken by the oscillation ef the rocking-post, the flour falling through the spout a, upon the higher end of the sieve, will, be screened or sifted, in its slow descent down the incline, through the meshes of tho'sievc, allowing the coarser flour and br'an to pass oil' at the lower end of the sieve.

The rocking-postj is attached to a rock-shaft, K, which is set in motion' by means of the upright connectingrod k', pitman'l, and the spur-wheel L, gearing with the wheel I upon the main shaft. v

This machine may be operated by either hand, dog, or horsepowcr, and is, therefore, admirablv adapted to the use of farmers who find it convenient ornecessary to grind their own flour and feed.

I am aware' that the various` parts ofv my device are not new in themselves, and therefore do not claim them; but l What I clamas my invention, aixd desire to sccurelby Letters Patent, isy The construction and arrangement of the serrated drum B, adjustable curved plate G, set-screws c' e, with notched heads and pawls, CZ, the hopper E, oscillating suspended bottom, F, slotted arm h2, spout a', inclined sieve J, and rock-shaft K, substantially as described for the purpose specified.

FRANKA KAISER.

Witnesses:

Bonner Busnasn, B. H. MUEHLE. 

